Nursing Elites

1. Mental disorders are almost always _______, meaning they are influenced by multiple genes.

• A. environmental
• B. chemical circuits
• C. polygenic
• D. probabilistic

Correct answer: C

Rationale: The correct answer is C: 'polygenic.' Mental disorders are polygenic, which means they are influenced by multiple genes. This term specifically refers to conditions or traits that are caused by more than one gene. Choice A, 'environmental,' is incorrect as it doesn't directly refer to the genetic influence on mental disorders. Choice B, 'chemical circuits,' is incorrect as it is too specific and not a common term used to describe the genetic basis of mental disorders. Choice D, 'probabilistic,' is incorrect as it relates more to the likelihood or chance of something happening rather than the genetic influence on mental disorders.

2. Defense mechanisms ________.

• A. make a person feel more anxious and have more problems, as they begin to act defensively.
• B. are strategies the id uses to try to achieve its desires.
• C. are conscious, intentional attempts to cope effectively with an anxiety-producing event.
• D. help a person feel less anxious, but because they usually work by distorting reality, they are not always adaptive.

Correct answer: D

Rationale: The correct answer is D because defense mechanisms aim to reduce anxiety but can lead to distortion of reality, making them not always beneficial. Choice A is incorrect as defense mechanisms are meant to reduce anxiety, not increase it. Choice B is incorrect because defense mechanisms are not strategies of the id specifically. Choice C is incorrect as defense mechanisms are often unconscious and not always intentional.

3. How do neurotransmitters affect behavior and mental processes?

• A. Neurotransmitters have little effect on behavior.
• B. Neurotransmitters are chemicals that influence mood, thought, and behavior.
• C. Neurotransmitters have a minor role in mental health.
• D. Neurotransmitters determine intelligence levels.

Correct answer: B

Rationale: Neurotransmitters are chemicals that influence mood, thought, and behavior, playing a significant role in mental health. Choice A is incorrect as neurotransmitters do have a notable effect on behavior. Choice C is incorrect as neurotransmitters have a major role in mental health. Choice D is incorrect as neurotransmitters do not solely determine intelligence levels.

4. What is the term for a fluid-filled sac in which the baby floats until just before it is born?

• A. Amnion
• B. Placenta
• C. Umbilical cord
• D. Embryo

Correct answer: A

Rationale: The correct answer is A: Amnion. The amnion is a fluid-filled sac that surrounds and protects the developing fetus in the womb. It acts as a cushion, maintaining a stable temperature and protecting the fetus from external pressure. Choices B, C, and D are incorrect because the placenta is an organ that provides nutrients and oxygen to the fetus and removes waste products, the umbilical cord connects the fetus to the placenta to facilitate nutrient exchange, and an embryo is an early stage of development before it becomes a fetus.

5. Which of the following statements about brain dysfunction and psychiatric disorders is correct?

• A. Identifiable brain damage is often the cause of psychiatric disorders.
• B. Brain damage may decrease the risk of developing a psychiatric condition.
• C. Changes in brain function appear to play a role in many psychiatric disorders.
• D. Brain development can be altered by experience, always leading to changes in the brain that decrease the risk of developing a psychiatric condition.

Correct answer: C

Rationale: The correct statement is C: 'Changes in brain function appear to play a role in many psychiatric disorders.' This statement is accurate as research suggests that alterations in brain function are associated with various psychiatric disorders. Option A is incorrect because while brain damage can contribute to some psychiatric conditions, it is not always the primary cause. Option B is incorrect as brain damage typically increases the risk of developing psychiatric disorders. Option D is incorrect because while brain development can be influenced by experiences, it does not always decrease the risk of psychiatric conditions.

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